Please help :(( Which of the following is the mark of a math novice as compared with a math expert?

A). Tackling a complex problem step-by-step rather than all at once
B). Identifying which mathematical principles are involved in solving a problem
C). Waiting until a multipart problem is completed to check all the calculations memorizing the solution to each problem given a lesson

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.